Old Painless from United States, MI Public Profile

I purchased this sight as a replacement for the original 507 I had mounted to my ACOG piggyback setup. The larger window is a noticeable improvement over the original. The footprint remains the same so there is not much bulk added other than the size of the window. Really happy they came out with this Ronin model of the 507 Comp. The dull matte finish on this one is way nicer than the greasy black finish with the hideous white writing on the standard 507 Comp. As for the operation, it is standard Holosun. I have one on my 5.56 rifle and another on a 12ga. No issues, no complaints. I do wish Trijicon would get their green LED tech into the RMR HD and perhaps sometime in the future they will. And perhaps Eotech will find a way to put their optics on a diet. Probably a long time coming for both outfits, though. I would rather give my money to other two, especially since they are both quite literally local companies per my locale. For now, at least, Holosun continues to provide excellent products ant a reasonable price point.

Mounted this on a Magpul DT stock. I also previously purchased the Magpul .75" buttpad, which is very firm and more for extending LOP as opposed to recoil mitigation. The Limbsaver unit is much more squishy. I honestly haven't shot the gun with this on there but, I'm certain that it will be an improvement over the Magpul pad. I have used Limbsaver buttpads on hunting guns in the past and they have always done a fantastic job of softening felt recoil. No reason this shouldn't be the case on an AR pattern rifle. The fit and finish are very good and it mounts with the factory hardware. Nice!